Find the value or values of the Y in the quadratic equation y squared + 4 y + 4 equals 7

Question

Jadiel Michael

Mathematics

6 October, 19:07

Find the value or values of the Y in the quadratic equation y squared + 4 y + 4 equals 7

+3

Answers (1)

Know the Answer?

Devin Smith · Answer 1

Y² + 4y + 4 = 7

- 7 - 7

y² + 4y - 3 = 0

y = - (4) ± √ ((4) ² - 4 (1) (-3))

2 (1)

y = - 4 ± √ (16 + 12)

2

y = - 4 ± √ (28)

2

y = - 4 ± 2√ (7)

2

y = - 2 ± √ (7)

y = - 2 + √ (7) U y = - 2 - √ (7)